Snatch-block.



P. M. SMITH.

SNATGH BLOCK.

APPLIOATION FILED 001213. 1013.

Patented 0013.27, 1914.

entor Attorneys FRANCIS M. SMITH, OFRAYMOND, WASHINGTON.

SNATCI-I-IBLOCK.

Specification of Letters Patent.

Application filed October 13, 1913.

Patented Oct. 2'7, 1914. Serial No. 794,976.

To all whom it may concern:

Be it known that I, FnANcIs M. SMITH, a citizen of the United States,residing at Raymond, in the county of Pacific and State of Washington,have invented a new and useful Snatch-Block, of which the following is aspecification.

The present invention relatesto improve ments in snatch blocks, oneobject of the invention being the provision of a snatch block, in whichthe members thereof, which journal the pulley or sheave, are relativelymovable with relation to each other to per mit of the placing of thecable thereupon without threading the same through the block, and alsoby means of which the haul ing cable may be positioned upon theconnecting bail without threading therethrough.

With the foregoing and other objects in view which will appear as thedescription roceeds, the invention resides in the comination andarrangement of parts and in the details of construction hereinafterclescribed and claimed, it being understood that changes in the preciseembodiment of the inventionherein disclosed can be made Within the scopeof what is claimed without departing from the spirit of the invention.

In the drawings-Figure 1 is a side elevation of the complete block madeaccording to and embodying the present invention. Fig. 2 is an end viewthereof. Fig. 3 is a section taken on line 3-3 of Fig. 1. Fig. 4 is atop plan view of the complete block. Figs. 5 and 6 are detail views.

Referring to the drawings, the numeral 1 designates one plate or sectionof the block, which is provided with the bridging or head member 2,which by means of the pin 3 has pivotedthereto, the hauling cablereceiving yoke or bail 4, the free end of said bail being provided withthe shouldered head 5, the purpose of which will presently appear. hebridging member 2 as at 6, is provided with the reduced portion 7,terminating in the elongated head 8, the portions 7 and 8 of thebridging member 6 in cross section being T shaped.

A stud 9 is secured by riveting to the member 1, and carries thelimiting disk 10 and the shaft 11 for the reception of the sheave orpulley 12. Upon each side of the sheave or pulley 12 is provided anannular shoulder 13-15, which fit respectively into the recessedportions 14.- and 16 formed in the inner face of the respective members1 and 21 of the block.

The disk 17, which corresponds to the disk 10 fits into the recessformed by the rim 15 of the sheave or pulley-12, and is carried by thestud or pin 18, which is rotatably mounted in the block member or plate21 and is provided with the cross head 19, which is shaped to bedisposed through the elongated opening 20 of the member 21 when it isdesired to remove the disk 17. By this means, the pulley or sheave 12 isproperly positioned in place and the members 1 and 21 are connected bythe pins 11 and 18 so that such members may be permitted independentswinging movement with the pins 11 and 18 as the axis. The upper reducedend 21 of the member 21 is provided with a T-shaped in cross sectionslot 22 for the reception of the heads 7-8 of the bridging members 6, sothat the members may be permitted the necessary independent movement topermit of the separation of the bridging member 6 from the end 21 of themember 21, and consequently the introduction of a cable upon the sheaveor pulley 12 between the members without disconnecting the shafts 11 and18 thereof.

In the upper end of the reduced end 21,

of the member 21, is provided the T-shaped in cross section slot 23, forthe reception of the cross head 5 of the bail 4, the movementindependently of the member 1, permitting the release of the cross head5 of the bail 4-, simultaneously with the release of the bridging member6 therefrom. By this means the bail 4 may be swung upon its pivot 3,andthe supporting cable for the snatch block placed therein without thenecessity of threading the end therethrough as is the usual practice. Inorder to hold the parts locked, when the cable is threaded through theblock and the bail 4, the slot 24 is provided for the reception of thebent end of the spring 25 which extends across the slot 23 and thuslocks the cross head 5 of the bail 4 against movement.

The recess or slot 22 of the member 21, is formed on a curve, and suchcurve is concentric with the shafts 11 and 18, so that when the member21 is swung or oscillated with the shafts 11 and 18 as the center, thehead. of the bridging member 6 will be moved into and out of the slot22, as will also the cross head 5 of the bail 4. It will thus be seenthat a cable may be readily placed upon the pulley or sheave 12, withoutbeing threaded therethrough, it being simply necessary to separate themember 21 to cause it to assume the dotted line position in Fig. 1, andat the same time, the bail l having its cross head released so that thehauling cable may be placed thereon without the necessity of threadingthe end therethrough.

What is claimed is:

A snatch block, comprising two plates, one of which carries a journalingpintle while the other of which is provided with an aperture havingoppositely extending recessed portions, the head of the journalingpintlebeing shaped to fit therethrough, whereby when the apertured plateis placed at varying positions, the plate is locked in can be removedfrom the pintle, a pivoted bail attached to one end of one plate, theother plate being provided with a reinforced end having a transversedslot to receive the free end of the bail as such plate is swung upon thepintle, said recessed plate being provided with a T-shaped recessopening to the inner wall thereof, and a T-shaped head opening to theinner face of the other plate for sliding engagement with the 'i"-shapedrecess to lock the plate against outward displacement.

In testimony that I claim. the foregoing as my own, I have heretoaffixed my signature in the presence of two witnesses.

FRANCIS M. SMITH.

place or l/Vitnesses A. R. BREWSTER, ALLIE B. RHODES.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of ratents,

Washington, D. E.

